The horror of July 22, 2011 is forever seared in Norway’s collective memory. That was the day that Anders Breivik opened fire on a summer camp of the Workers' Youth League on the tiny island of Utoya. The crazed gunman killed 69 people in cold blood – most of them teenagers – and wounded over 100 others. The shock was immense.
Emotion overwhelmed Norway, a country that had not witnessed such tragedy since World War II.
Three years later, as the survivors struggle to come to terms with the ordeal, they remain haunted by one question: why? Our correspondent in Norway went to meet them.